Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/login/users/avatar/mock_user_image_manager.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_MOCK_USER_IMAGE_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_MOCK_USER_IMAGE_MANAGER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "chrome/browser/chromeos/login/users/avatar/user_image_manager.h"
 #include "components/user_manager/user_image/user_image.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace chromeos {
 
 class MockUserImageManager : public UserImageManager {
  public:
   explicit MockUserImageManager(const std::string& user_id);
   virtual ~MockUserImageManager();
 
   MOCK_METHOD1(SaveUserDefaultImageIndex, void(int));
-  void SaveUserImage(scoped_ptr<user_manager::UserImage>) {}
+  void SaveUserImage(std::unique_ptr<user_manager::UserImage>) {}
   MOCK_METHOD1(SaveUserImageFromFile, void(const base::FilePath&));
   MOCK_METHOD0(SaveUserImageFromProfileImage, void());
   MOCK_METHOD1(DownloadProfileImage, void(const std::string&));
   MOCK_CONST_METHOD0(DownloadedProfileImage, const gfx::ImageSkia& (void));
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_MOCK_USER_IMAGE_MANAGER_H_